Jar



FIG. 1 is a perspective view of a jar showing my new design;

FIG. 2 is a front view thereof; a rear view being identical to the front view;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof; and,

FIG. 5 is a right side view thereof; a left side view being identical to the right side view.

The broken lines in the FIG. 4 bottom plan view illustrate the portions of the design that form no part of the claim. 

The ornamental design for a jar, as shown and described. 